Question

4. If (3a-5b): (3a + 5b) = 1:4 then find the value of a : b.​

Answer 1

According to Question ,

Equations are :-

$\huge \sf \cancel{3a} - 5b = 1 \\ \underline{\huge\sf \cancel{3a} + 5b = 4 } \\ \huge \sf 10b = 3 \\ \huge \sf b = \frac{3}{10} = 0.3$

$\huge \boxed{ \boxed{ \blue{ \sf b = 0.3}}}$

now substitute b = 0.3 in 3a - 5b = 1 , we get

$\huge \sf 3a - 5(0.3) = 1$

$\huge \sf 3a - 1.5 = 1$

$\huge \sf 3a = 2.5 \implies a = \frac{2.5}{3}$

$\huge \sf a = 0.83$

Mark as Brainliest answer please my friend

Answer 2

Answer

Step-by-step explanation: